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Add length check when take(rsp_length) #96

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May 30, 2024
Merged

Add length check when take(rsp_length) #96

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25 changes: 15 additions & 10 deletions spdmlib/src/message/vendor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -160,17 +160,22 @@ impl Codec for VendorDefinedRspPayloadStruct {

fn read(r: &mut Reader) -> Option<VendorDefinedRspPayloadStruct> {
let rsp_length = u16::read(r)?;
let mut vendor_defined_rsp_payload = [0u8; MAX_SPDM_VENDOR_DEFINED_PAYLOAD_SIZE];
for d in vendor_defined_rsp_payload
.iter_mut()
.take(rsp_length as usize)
{
*d = u8::read(r)?;
if rsp_length as usize > MAX_SPDM_VENDOR_DEFINED_PAYLOAD_SIZE {
log::error!("invalid rsp length!!!\n");
None
} else {
let mut vendor_defined_rsp_payload = [0u8; MAX_SPDM_VENDOR_DEFINED_PAYLOAD_SIZE];
for d in vendor_defined_rsp_payload
.iter_mut()
.take(rsp_length as usize)
{
*d = u8::read(r)?;
}
Some(VendorDefinedRspPayloadStruct {
rsp_length,
vendor_defined_rsp_payload,
})
}
Some(VendorDefinedRspPayloadStruct {
rsp_length,
vendor_defined_rsp_payload,
})
}
}

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